CA2532649A1 - Method for the separation of a crude c4 cut - Google Patents
Method for the separation of a crude c4 cut Download PDFInfo
- Publication number
- CA2532649A1 CA2532649A1 CA002532649A CA2532649A CA2532649A1 CA 2532649 A1 CA2532649 A1 CA 2532649A1 CA 002532649 A CA002532649 A CA 002532649A CA 2532649 A CA2532649 A CA 2532649A CA 2532649 A1 CA2532649 A1 CA 2532649A1
- Authority
- CA
- Canada
- Prior art keywords
- distillation column
- extractive distillation
- stream
- taken
- crude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 10
- 238000000926 separation method Methods 0.000 title abstract 2
- 238000000895 extractive distillation Methods 0.000 claims abstract 28
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract 10
- 239000002904 solvent Substances 0.000 claims abstract 10
- 238000000354 decomposition reaction Methods 0.000 claims abstract 2
- 229930195733 hydrocarbon Natural products 0.000 claims abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract 2
- 230000002269 spontaneous effect Effects 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims 10
- QNRMTGGDHLBXQZ-UHFFFAOYSA-N buta-1,2-diene Chemical compound CC=C=C QNRMTGGDHLBXQZ-UHFFFAOYSA-N 0.000 claims 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims 2
- -1 C4-acetylenes Chemical class 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 125000002534 ethynyl group Chemical class [H]C#C* 0.000 abstract 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract 1
- 239000001273 butane Substances 0.000 abstract 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 abstract 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
- C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
- C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/40—Extractive distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
- B01D3/4211—Regulation; Control of columns
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/12—Alkadienes
- C07C11/16—Alkadienes with four carbon atoms
- C07C11/167—1, 3-Butadiene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Removal Of Specific Substances (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Disintegrating Or Milling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A method for separation of a crude C4 cut, containing butane, butene, 1,3-butadiene and small amounts of other hydrocarbons, amongst which are C4 acetylenes, by means of extractive distillation with a selective solvent is disclosed, whereby the crude C4 cut (1) is introduced into a first extractive distillation column (K I) in the mid region thereof, the selective solvent (2) introduced above the crude C4 cut (1) and a vapour sidestream (3) withdrawn from the first extractive distillation column below the introduction point of the crude C4 cut (1), containing the C4 acetylenes and predominantly the selective solvent as well, whereby the concentration of the C4 acetylenes in the vapour sidestream (3) lies below the spontaneous decomposition level and a head stream (5) is withdrawn containing the components which are less soluble then the C4 acetylenes in the selective solvent.
Claims (8)
1. A process for fractionating a crude C4 fraction comprising butenes, butenes, 1,3-butadiene and small amounts of other hydrocarbons including C4-acetylenes, 1,2-butadiene and C5-hydrocarbons by extractive distillation using a selective solvent, wherein the crude C4 fraction (1) is fed into the middle region of a first extractive distillation column (K I) and the selective solvent (2) is fed into the column at a point above that at which the crude C4 fraction (1) is introduced and a gaseous side stream (3) which comprises the C4-acetylenes together with 1,3-butadiene, 1,2-butadiene, C5-hydrocarbons and selective solvent and in which the concentration of the C4-acetylenes is below the spontaneous decomposition limit is taken off from the first extractive distillation column (K I) at a point below the feed point for the crude C4 fraction (1) and an overhead stream (5) comprising the components of the crude C4 fraction which are less soluble than the C4-acetylenes in the selective solvent is taken off from the top of the first extractive distillation column.
2. A process as claimed in claim 1, wherein the gaseous side stream (3) is fed to a first side column (SK I) in which it is separated into an overhead stream (6) which comprises the C4-acetylenes and is condensed in a con-denser at the top of the first side column (SK I) and part of it is returned as runback to the first side column (SK I) while the remainder is taken off and a bottom stream (7) which comprises the selective solvent and is returned to the first extractive distillation column (K I).
3. A process as claimed in claim 1 or 2, wherein a bottom stream (4) is taken off from the first extractive distillation column (K I) and is cooled by indi-rect heat exchange with the crude C4 fraction (1), condensed in a condenser and returned as stream (2) to the first extractive distillation column (K I).
4. A process as claimed in any of claims 1 to 3, wherein liquid or a substream of the liquid is taken off from the first extractive distillation column (K I) at a theoretical plate which is one or more theoretical plates below the point at which the gaseous side stream (3) is taken off, the liquid is heated and/or vaporized by indirect heat exchange with the bottom stream (4) from the first extractive distillation column (K I) and is returned to the first extrac-tive distillation column (K I) on the same theoretical plate or above this point, with the theoretical plate from which the liquid or liquid substream is taken off being chosen so that the energy requirement for the first extrac-tive distillation column (K I) is minimized.
5. A process as claimed in any of claims 1 to 4, wherein the overhead stream (5) from the first extractive distillation column (K I) is condensed in a con-denser at the top of the first extractive distillation column (K I) and part of it is returned as runback while the remainder of the condensed overhead stream (8) is fed to a second extractive distillation column (K II) in which it is separated into raffinate 1 and crude 1,3-butadiene.
6. A process as claimed in claim 5, wherein a partial condensation is carried out in the condenser at the top of the first extractive distillation column (K I) and the condensed portion of the overhead stream (5) from the first extractive distillation column (K I) is used as runback while the gaseous portion of it is fed to the second extractive distillation column (K II).
7. A process as claimed in claim 5 or 6, wherein an overhead stream (9) is taken off from the second extractive distillation column (K II), condensed in a condenser and part of it is returned as runback to the second extractive distillation column (K II) while the remainder is taken off as raffinate 1, and a side stream (10) is taken off from the second extractive distillation column (K II) below the feed point for the stream (8) and this is preferably fed to a second side column (SK II) in which it is separated into an over-head stream which is condensed and part of it is returned as runback to the second side column (SK II) while the remainder is taken off as crude 1,3-butadiene stream and a bottom stream (12) which comprises the selective solvent and is returned to the second extractive distillation column (K II).
8. A process as claimed in any of claims 5 to 7, wherein liquid or a substream of the liquid is taken off from the second extractive distillation column (K
II) at a theoretical plate which is one or more theoretical plates below the side offtake (10), the liquid is heated and/or vaporized by indirect heat ex-change with the bottom stream (13) from the second extractive distillation column (K II) and is returned to the second extractive distillation column (K II) on the same theoretical plate or above this point, with the theoretical plate from which the liquid or liquid substream is taken off being chosen so that the energy requirement for the second extractive distillation column (K
II) is minimized.
II) at a theoretical plate which is one or more theoretical plates below the side offtake (10), the liquid is heated and/or vaporized by indirect heat ex-change with the bottom stream (13) from the second extractive distillation column (K II) and is returned to the second extractive distillation column (K II) on the same theoretical plate or above this point, with the theoretical plate from which the liquid or liquid substream is taken off being chosen so that the energy requirement for the second extractive distillation column (K
II) is minimized.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10333756A DE10333756A1 (en) | 2003-07-24 | 2003-07-24 | Process for the separation of a crude C4 cut |
| DE10333756.3 | 2003-07-24 | ||
| PCT/EP2004/008192 WO2005009931A2 (en) | 2003-07-24 | 2004-07-22 | Method for the separation of a crude c4 cut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2532649A1 true CA2532649A1 (en) | 2005-02-03 |
| CA2532649C CA2532649C (en) | 2012-02-07 |
Family
ID=34071881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2532649A Expired - Fee Related CA2532649C (en) | 2003-07-24 | 2004-07-22 | Method for the separation of a crude c4 cut |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US7557257B2 (en) |
| EP (1) | EP1656334B1 (en) |
| JP (1) | JP4589317B2 (en) |
| KR (1) | KR101084866B1 (en) |
| CN (1) | CN100375735C (en) |
| AT (1) | ATE370925T1 (en) |
| AU (1) | AU2004259076B2 (en) |
| CA (1) | CA2532649C (en) |
| DE (2) | DE10333756A1 (en) |
| ES (1) | ES2288691T3 (en) |
| MX (1) | MXPA05012924A (en) |
| PL (1) | PL1656334T3 (en) |
| RU (1) | RU2315028C2 (en) |
| WO (1) | WO2005009931A2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10219375A1 (en) * | 2002-04-30 | 2003-11-13 | Basf Ag | Continuous process for the extraction of butenes from a C4 cut |
| CN101050159B (en) * | 2007-05-17 | 2010-06-23 | 新疆独山子天利高新技术股份有限公司 | Method for separating butane and butylenes, and dedicated installation |
| KR101111015B1 (en) * | 2008-07-17 | 2012-04-04 | 에스케이이노베이션 주식회사 | Process for 1,3-butadiene separation from a crude C4 stream with acetylene converter |
| CN101337132B (en) * | 2008-08-04 | 2013-08-21 | 董保军 | Extraction rectification technique |
| CN103044183B (en) * | 2011-10-14 | 2014-12-31 | 中国石油化工股份有限公司 | Extractive distillation method of butadiene |
| US8766029B2 (en) * | 2012-01-11 | 2014-07-01 | Basf Se | Process for providing a vaporous purified crude C4 cut as a feed steam for an extractive distillation with a selective solvent |
| WO2013104692A1 (en) * | 2012-01-11 | 2013-07-18 | Basf Se | Method for providing a purified crude gaseous c4 fraction as an input stream for an extractive distillation using a selective solvent |
| CN102942437A (en) * | 2012-11-22 | 2013-02-27 | 万达集团股份有限公司 | One-section extraction method of butadiene by using N-methy pyrrolidone (NMP) |
| US10125063B2 (en) * | 2014-07-08 | 2018-11-13 | Basf Se | Column with separative installations for separating a mixture of hydrocarbons and/or hydrocarbon derivatives by means of an extractive distillation using a selective solvent |
| RU2734254C2 (en) * | 2015-12-18 | 2020-10-13 | Сабик Глобал Текнолоджис Б. В. | Methods and systems for producing 1,3-butadiene |
| WO2018138100A1 (en) * | 2017-01-25 | 2018-08-02 | Basf Se | Method for obtaining pure 1,3-butadiene |
| JP7076465B2 (en) * | 2017-03-13 | 2022-05-27 | ビーエーエスエフ ソシエタス・ヨーロピア | Simplified method for isolating pure 1,3-butadiene |
| FR3068819B1 (en) | 2017-07-04 | 2019-11-08 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | LED DISPLAY DEVICE |
| CN107382652A (en) * | 2017-08-01 | 2017-11-24 | 山东滨庆新能源开发有限公司 | Rich alkynes carbon four decolourizes, removing impurities matter technique |
| CN109970504A (en) * | 2019-04-11 | 2019-07-05 | 山东东明石化集团有限公司 | A kind of process of butylene concentration |
| UA124434C2 (en) * | 2019-06-04 | 2021-09-15 | Товариство З Обмеженою Відповідальністю "Виробнича Група "Техінсервіс" | METHOD OF OBTAINING 1,3-BUTADIENE FROM MIXED CARBOHYDRATES OF C <sub> 4 </sub> + fraction |
| EP4108306A1 (en) * | 2021-06-25 | 2022-12-28 | Evonik Operations GmbH | Extraction distillation column system and its use in the separation of butenes from c4 hydrocarbon streams |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1555312A (en) * | 1923-10-22 | 1925-09-29 | Metal Res Corp | Pure iron product |
| US3000794A (en) * | 1958-05-19 | 1961-09-19 | Petro Tex Chem Corp | Extractive distillation of vinyl acetylene in the purification of butadiene |
| BE791887A (en) * | 1971-11-26 | 1973-05-24 | Basf Ag | PROCESS FOR OBTAINING PURE CONJUGATED DIOLEFINS CONTAINING 4 AND 5 CARBON ATOMS, FROM MIXTURES |
| US4128457A (en) * | 1977-03-09 | 1978-12-05 | Societa' Italiana Resine S.I.R. S.P.A. | Process for the separation of butadiene by plural stage extractive distillation |
| US4277313A (en) | 1980-03-27 | 1981-07-07 | El Paso Products Company | Recovery of 1,3-butadiene |
| JPS5754129A (en) * | 1980-09-18 | 1982-03-31 | Japan Synthetic Rubber Co Ltd | Purification of butadiene or isoprene |
| JPS5892625A (en) * | 1981-11-27 | 1983-06-02 | Nippon Zeon Co Ltd | Separation of high purity butene-1 or butene-1/isobutene mixture from 4c hydrocarbon fraction |
| JPS58152823A (en) * | 1982-03-08 | 1983-09-10 | Japan Synthetic Rubber Co Ltd | Extractive distillation |
| JPS58167683A (en) * | 1982-03-29 | 1983-10-03 | Nippon Zeon Co Ltd | Extractive distillation |
| JPS59167525A (en) * | 1983-03-14 | 1984-09-21 | Japan Synthetic Rubber Co Ltd | Production of 1,3-butadiene |
| DE3710434A1 (en) * | 1987-03-28 | 1988-10-06 | Basf Ag | METHOD FOR OBTAINING 1,3-BUTADIENE |
| US6040489A (en) | 1998-12-09 | 2000-03-21 | Uop Llc | 1,3-Butadiene separation from a crude C4 stream using catalytic extractive distillation |
| DE10022465A1 (en) * | 2000-05-09 | 2001-11-15 | Basf Ag | Processing a four carbon cut from the fractionation of crude oil, useful for the recovery of 1,4-butadiene, comprises extractive distillation, selective hydrogenation and distillation |
| DE10105660A1 (en) * | 2001-02-08 | 2002-08-14 | Basf Ag | Process for the extraction of crude 1,3-butadiene by extractive distillation from a C4 cut |
| DE10233620A1 (en) * | 2002-07-24 | 2004-02-12 | Basf Ag | Continuous process for cutting a C4 cut |
-
2003
- 2003-07-24 DE DE10333756A patent/DE10333756A1/en not_active Withdrawn
-
2004
- 2004-07-22 KR KR1020067001522A patent/KR101084866B1/en not_active IP Right Cessation
- 2004-07-22 JP JP2006520792A patent/JP4589317B2/en not_active Expired - Lifetime
- 2004-07-22 US US10/565,209 patent/US7557257B2/en active Active
- 2004-07-22 CN CNB2004800214397A patent/CN100375735C/en not_active Expired - Fee Related
- 2004-07-22 DE DE502004004755T patent/DE502004004755D1/en not_active Expired - Lifetime
- 2004-07-22 CA CA2532649A patent/CA2532649C/en not_active Expired - Fee Related
- 2004-07-22 AU AU2004259076A patent/AU2004259076B2/en not_active Ceased
- 2004-07-22 EP EP04763397A patent/EP1656334B1/en not_active Expired - Lifetime
- 2004-07-22 PL PL04763397T patent/PL1656334T3/en unknown
- 2004-07-22 ES ES04763397T patent/ES2288691T3/en not_active Expired - Lifetime
- 2004-07-22 WO PCT/EP2004/008192 patent/WO2005009931A2/en active IP Right Grant
- 2004-07-22 AT AT04763397T patent/ATE370925T1/en active
- 2004-07-22 RU RU2006105704/04A patent/RU2315028C2/en active
- 2004-07-22 MX MXPA05012924A patent/MXPA05012924A/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| US20060241329A1 (en) | 2006-10-26 |
| DE502004004755D1 (en) | 2007-10-04 |
| US7557257B2 (en) | 2009-07-07 |
| AU2004259076B2 (en) | 2011-02-24 |
| KR20060065639A (en) | 2006-06-14 |
| DE10333756A1 (en) | 2005-02-17 |
| MXPA05012924A (en) | 2006-02-28 |
| JP4589317B2 (en) | 2010-12-01 |
| CA2532649C (en) | 2012-02-07 |
| RU2315028C2 (en) | 2008-01-20 |
| JP2006528606A (en) | 2006-12-21 |
| EP1656334A2 (en) | 2006-05-17 |
| EP1656334B1 (en) | 2007-08-22 |
| CN100375735C (en) | 2008-03-19 |
| ATE370925T1 (en) | 2007-09-15 |
| ES2288691T3 (en) | 2008-01-16 |
| WO2005009931A3 (en) | 2005-04-07 |
| CN1829672A (en) | 2006-09-06 |
| WO2005009931A2 (en) | 2005-02-03 |
| KR101084866B1 (en) | 2011-11-21 |
| RU2006105704A (en) | 2006-09-10 |
| AU2004259076A1 (en) | 2005-02-03 |
| PL1656334T3 (en) | 2008-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150722 |